Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
su sach » so sach, vu sach
dai moi » doi moi, dai hoi
mai hoi » mai khoi, dai hoi, lai hoi
y lang » o lang, _ lang, tay lang
xuc va » duc va, tuc va, luc va
va cau » van cau, va cac, va dau
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang ((mai hoi) or (dai moi)). hieu ((ve cam) or (vu cham)) xuc va hanh va cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang ((mai hoi) OR (dai moi)). hieu ((ve cam) OR (vu cham)) xuc va hanh va cau triet.
• Adding a wildcard symbol may retrieve word variants: su sach y lang ((mai hoi) or (dai moi)). hieu ((ve cam) or (vu cham)) xuc va hanh va cau triet*.